Though the teacher had tried to make the problem easy _______, still Lily and her partner were at a loss.
| A．understood | B．understanding | C．to understand | D．to be understood |
We were reading _______ the lights were out.
| A．as | B．when | C．while | D．until |
Henry must have stayed up last night, ________ he looks so tired and sleepy.
| A．for | B．as | C．though | D．since |
It was __________ I went fishing in the open air yesterday.
| A．such a nice weather | B．so nice weather that |
| C．such nice weather that | D．a nice weather so that |
The Dragon Boat Festival______on the fifth day of the fifth month of the lunar year.
| A．falls | B．gets | C．bexomes | D．turns |
Richard was very strict with his two daughters,______them to compete against each other.
| A．to train | B．trained | C．and trains | D．training |